wavkit is a group linux command line tools for processing WAV files.

• wavcat - Combines multiple audio wave files.
• wavchexp - Exports each audio channel of a wave file to separate files.
• wavdynamp - The best dynamic amplification / audio range compressor anywhere!
• wavenh - Audio enhancement utility (mostly useless)
• wavinfo - Wave file information.
• wavmono - Down samples wave to mono.
• wavsplit - The intellegent wave file splitter.
• wavstereo - Converts to two channel wav file.

Basically, I made these back around 2001-2002 for converting and processing audiobooks from cassette to mp3. Even though, these tools are now nearly 25 years old, I have never found a more powerfull dynamic amplifier/compressor than wavdynamp. Also, wavchexp is still one of the easier ways to convert left/right channel audiobooks into separate audio files.